21 kmpl = 49.4 mpg
Also: 4.76 L/100km
Also: 21 km/L (kmpl)
| kmpl | mpg | L/100km | km/L |
|---|---|---|---|
| 15 | 35.28 | 6.67 | 15 |
| 17 | 39.99 | 5.88 | 17 |
| 19 | 44.69 | 5.26 | 19 |
| 21 | 49.4 | 4.76 | 21 |
| 23 | 54.1 | 4.35 | 23 |
| 25 | 58.8 | 4 | 25 |
| 27 | 63.51 | 3.7 | 27 |
International System of Units (SI) measurements
Traditional British and American measurements
mpg → L/100km: L/100km = 235.215 ÷ mpg
mpg → km/L (kmpl): km/L = mpg × 0.4251
L/100km → mpg: mpg = 235.215 ÷ L/100km
These formulas use US gallons. UK (imperial) mpg uses a larger gallon (4.546 L vs 3.785 L), so UK 50 mpg ≈ 5.65 L/100km rather than 4.70 L/100km.